Today I made a video of it with the score on the screen so you could follow the music (the sound was generated by computer, but I hope you can forgive me for that).
By the way, I have played this Prelude yesterday on the unique 1789 organ in Tytuvenai (about 2.5 hours drive west from Vilnius) and recorded it, but this video is not yet ready to share.
As you can see in this video, this Prelude could be performed without the pedals (as I did in Tytuvenai because this organ only has 2 manuals but no pedals!) but sometimes the distance between the bass and the tenor parts is more than an octave so it's easier to play the bass part with your feet.
The structure of this composition is as follows:
1. Exposition I (D minor)
2. Bridge (F major to A minor)
3. Exposition II (A minor)
4. Development (C major and E major)
5. Preparation for Re-entry (A flat major to D minor)
6. Return of the Tonic Key (D minor)
7. Coda (excursion to G minor)
The harmonic language and texture is intentionally fairly simple which will work well for the village church organ in Mosedis where I will be performing a recital in 2 weeks.
The registration could be quite varied anywhere from a few flutes to a full Principal Chorus sound. If you want to play this piece, here is the PDF file for printing.